"Our son will be called Gabriel as there is a tradition in our family of going by our middle names," the Emmy-winning new dad, 59, told "ET." "We are blessed and excited to have this lovely young man join our family — he is magnificent!"

Gabriel joins big sister Faith Evangeline Elisa, 2. Grammer also has four other children — Spencer, 30, Greer, 22, Mason, 12, and Jude, 9 — from previous relationships, and is a grandfather to Spencer's son Emmett, 2.